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What Our Patients Are Saying

At California Protons, we value the opinions of our patients and welcome their feedback. We work hard to ensure each patient's experience is a positive and collaborative one. Here are some things our patients have said about their time with us.

Randy G.
prostate cancer
I was diagnosed with Stage 2 prostate cancer (PSA of 8.7) July13, 2020. My own due diligence quickly revealed that proton therapy was the best option by far - few side or after effects and 98% success rate. I also learned that the leading world oncologist for treating prostate cancer with protons, D…
September 2025
Google
Carl Rossi, MD
Steve S.
prostate cancer
Excellent staff, center and care. Very thankful I got Dr. Rossi, he is kind, helpful and a pioneer in this field. Much less side effects than traditional treatment. 1st PSA test is down to normal parameters. I like how they talk about diet as well. The staff in the Financial Department made this pos…
June 2025
Google
Carl Rossi, MD
Jen O.
I had the best experience at California Protons. I can’t speak highly enough of Dr. Iain MacEwan. I’m from out of town so Zoom pre & post treatment calls were easy and he’d share the screen to review my imaging and explain the results with me so it was easy to understand. His demeanor is so upli…
December 2024
Google
Iain MacEwan, MD
Nina S.
breast cancer
My mom was diagnosed with triple negative invasive carcinoma breast cancer in November of 2022. She didn’t want to do more damage to her body or immune system with the radiation and chemicals the chemo would cause so she started searching for different treatments options other than the traditional r…
October 2024
Google
California Protons
William S.
Dr. Carl Rossi began caring for me since 2003 while he was at Loma Linda University Proton Center. I was thrilled when I learned he was now at California Protons Treatment Center. I have now been there for the treatment of three separate cancer issues. This is a five star medical treatment facility…
October 2024
Google
Carl Rossi, MD
Drisana M.
This place is HUGE! There is a great lobby for the family and support partners in care to hang while your loved one is getting their treatment. There is free coffee and vending machines with snacks and drinks. There are also multiple tables with puzzles as well as other games to play. My son had …
March 2024
Google
Brian Chou, MD
Ray D.
When I was diagnosed with prostate cancer I was given two options: surgery or proton radiation therapy. I chose proton therapy at California Protons, and I'm glad I did. Surgery would have been unpleasant and instantly life-changing. Proton therapy was was a breeze in comparison, and so far the side…
November 2022
Yelp
California Protons
Viviana M.
breast cancer
This place is awesome. I came in for 25 sessions in Brest cancer treatment and I have nothing but good things to say about my experience. The people here are super dedicated, professional and humane. These girls took care of me and earned a place in my heart forever. Thank you for everything.
June 2022
Google
Radiation Therapy Team
James B.
Dr. Rossi and staff literally saved my life. So timely and Uber professional. Called from Maui and discussed recent tests. I had an appointment next afternoon. 40 days of proton therapy which was a piece of cake compared to the daily chemo pills. Now almost 7 years later and I'm alive and well i…
March 2022
Google
Carl Rossi, MD
Marie Y.
Very nice welcome, wonderful Ladies at the front desk, extremely clean facilities, very peaceful for the patient and his/her family member. The doctors and technicians are excellent and extremely professional.
February 2022
Yelp
California Protons
Jack K.
California Protons is an amazing place made so by the staff. Everyone from the receptionist to the senior radiation oncologist gave me their full and undivided attention. The proton treatment is the most advanced and least harmful radiation therapy. I'm so grateful I was able to relocate to San Dieg…
September 2021
Yelp
California Protons
Floyd H.
If I could give them 10 stars I would. The whole staff is amazing and made my journey throughout the treatments extremely pleasant. It was a bittersweet moment during my last visit. I enjoyed and looked forward with each visit due to the staff and then it came to an end 😢. From the front door to all…
May 2021
Google
California Protons
Maribeth P.
A cancer diagnosis is life changing. I looked for radiation that would not damage my heart and lungs for the left side of my chest. We attended the tour at California Proton Center, where Dr Chang presented. We were impressed by the tour, and the professionalism of the staff. The facility is high te…
January 2020
Patient Satisfaction Survey
Andrew Chang, MD
Louise O.
prostate cancer
When you hear "those" dreaded words, for yourself or a loved one, you're entire world feels like its coming undone. For us, it was my husband, diagnosed with Prostate Cancer. We found the Proton Center through his urologist and we cannot say enough how fortunate we feel to have been able to be treat…
March 2019
Yelp
California Protons
Sal M.
prostate cancer
I completed treatment for prostate cancer at California Protons back in March 2018. Insofar as the people, the facility and the actual treatment are concerned, I would give them a 10+ if I could. The front desk staff to the technicians and everyone in-between were as nice, professional and concerned…
October 2018
Yelp
Carl Rossi, MD

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